空心长方形支承规格
45*60*80 45*60*120 45*60*150 45*60*180 45*60*210 45*60*240 45*60*300 45*60*360
60*60*80 60*60*120 60*60*150 60*60*180 60*60*210 60*60*240 60*60*300 60*60*360 60*60*42
空心长方形支承规格
45*60*80 45*60*120 45*60*150 45*60*180 45*60*210 45*60*240 45*60*300 45*60*360
60*60*80 60*60*120 60*60*150 60*60*180 60*60*210 60*60*240 60*60*300 60*60*360 60*60*420
60*90*80 60*90120 60*90*150 60*90180 60*90*240 60*90*300 60*90*360 60*90*420